Clinton says preventing the exploitation and marginalization of girls is no longer an afterthought but a core foreign policy objective of the United States, which is co-sponsoring a Security Council resolution on the issue next week.

VOA: standard.2009.09.25

We do have, um, a focus on non- Western cultures in one of our core curriculum classes.

在核心课程中，我们确实有一门课不是讲西方文化的。

哥伦比亚大学的教程 - SpeakingMax英语口语达人

LS And what very often happens if you do an LS in your account, to list your files, there's a whole lot of stuff in here at the moment -- and I don't have it here - but what you'll often see -- I'll just fake this demo -- is a file called core.

经常发生的是，如果你用你的账号做一个，来列出你的文件，此刻这里有一大堆元素,-它不在这里,但你们将经常看到--我将篡改这个演示-,是一个叫做core的文件。

哈佛公开课 - 计算机科学课程节选

We realized we had to push certain boundaries and there were a few weeks there that were,I have to say, some of the most hard-core filming experiences I have ever had and it was pretty intense."

VOA: standard.2010.02.27